Machine for pointing wise



UNITED STATES PATENT OFFICE.

C. JILLSON, OF WORCESTER, MASSACHUSETTS.

MACHINE FOR POINTING WIRE.

Specification forming part of Letters Patent No. V18,205, dated September 15, 1857; Reissued June 1, 1869, Nos. 3,475 and 3,476.

To all whom it may concern.'

Be it known that I, C. JILLsoN, of VVorcester, in the county of lVorcester and State of Massachusetts, have invented certain new and useful Improvements in Machines for Pointing Wire; and I do hereby declare the following to be a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this description, in which- Figure 1 represents the machine in perspective. Fig. 2 represents a longitudinal vertical section through the machine. Fig. 3 represents a'top plan in one position, and Fig. 4 represents a similar top plan in an other position, or when the point is formed on the wire.

Similar letters of reference where they occur in the separate figures denote like parts of the machine in all of them.

My invention consists in an instrument for pointing wires, in which the point of the wire being acted upon, causes the cutting tool to recede with either a regular or irregular motion to suit the kind of taper to be given to said wire.

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings.

A represents a case or stock through a square mortise in which passes the shank B, of a cutting tool C, that protrudes therefrom as seen in Figs. 1 and 2. This shank B, is made to fit snugly in the mortise in the case, but so that it may also be drawn through the mortise to draw the cutter C from the wire that is being pointed. On that part of the shank B, which projects from the rear of the case A, is fitted a piece D, and held tothe shank by a set screw o or otherwise; and in the top of this piece D, there is a pin or standard o, upon which is placed a friction roll o, a nut Z to hold in on, and one end of a coiled spring c, the the other end thereof being connected to the stud The spring e, is for drawing back the cutter after it has been forced into the case, or stock A, and for holding it out, while the piece D, serves to regulate the distance or eXtent to which the cutter shall project from said case or stock.

On top of the case or stock A, is pivoted at z', a lever E, the forward end of which is bent downward and flattened out, as seen at m, Figs. l and 2, and the rear end of said lever has an arm n', upon it which may be slotted, so as to receive a pattern or plate 0, which designates the taper or form of point to be made. This pattern plate has a slot q in one of its ends through which and through the arm n passes a set screw r, the other end of said plate 0, being held by the screw s, and it is placed close up to the friction roll c. In a projecting piece F, of the case or stock, is screwed an eye o, the opening in which should be of the diameter of the wire to be pointed, and this eye should be removable so as to make the machine capable of pointing wires of different sizesthe shape of the point being determined by the pattern plate o, heretofore described.

The instrument is or may be fastened to the dead spindle of a lathe, in such manner as to have the hole at the point of the cutter exactly in the center. The wire to be pointed is then fastened in the other spindle and set in motion, and the instrument pressed against the wire (which must till the eye, or hole through which it is fed). The point of the wire as it passes the cutter, presses against the flat part m of the lever E, and forces that end of the lever away from the cutting tool-this causes said lever to turn on its pivot i, and bring the edge of the plate 0, against the friction roll c, and force said roll away against the action of the spring e. But as the roll is fast on the shank B, of the cutter it forces said shank backward, and draws the cutter away from the wire, as seen in Fig. t, where the wire that is being pointed is shown in red lines, and the moving away of the cutter from the wire is what regulates the taper of the point, for it will be observed that the edge of the plate 0 that is in contact with the roll o, has a regular outline, and will form a regular taper, while the opposite side of the plate 0 has an irregular outline and would form a point like that shown in red lines to the right of Fig. l 1L-and this plate o can be turned over so as to make that form of point. By changing the plate also on the arm nfL-that is by turning it on its pivot s, and then holding it by the set screw r the length of paper may be changed. Thus by this instrument different sized wires may be pointed-different tapers may be given and different shaped points may be had. The point is first eut, and the taper Causing the Wire that is being pointed to runs out from the point. This is not the force the cutter away from the point that usual Way of pointing a pin or other simig is being out, but in iorcing it away, conlar thing as they are dressed from the body trolied by a pattern which regulates the l5 5 to the point, While my Wires are cut from form and the taper given to the Wire-the the point to the body, thus reversing the Whole being accomplished by means subgeneral operation. stantially such as herein set forth.

Having thus fully described the naturet C. JILLSON. and object of my pointing machine, what I t W'itnesses:

l0 claim therein as'neW and desire to secure by 1NM. STREETER, Jr.,

Letters Patent is, R. E. L. JILLsoN.

[FIRST PRINTED 1912.] 

